Scrubbing machine



Jan. 2, 1934. N JANCHAN 1,941,690

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lforney Jan. 2, 1934. N. JANCHAN 1,941,590

SCRUBBING MACHINE Filed Dec. 4, ]95l 4 Sheets-Sheet 4 Patented Jan. 2, 1934 UNITED STATES PATENT vOFFICE 2 Claims.

This invention appertains to new and useful improvements in floor scrubbing machines, and more particularly to a floor scrubbing machine of the fountain type.

6 An important object of the invention is to provide a scrubbing machine including a wiper web, and wherein the wiper web is guided against disalinement with respect to the brushing element.

Another important object of the invention is 10 to provide a scrubbing machine wherein the single power plant is employed for not only driving the wiper web and rotating the scrubbing brush, but also for propelling the entire machine upon the floor.

These and other important objects and advantages of the invention will become apparent to the reader of the following specification.

In the drawings:-

Fig. 1 represents a top plan view of the ma- 20 chine.

Fig. 2 represents a longitudinal sectional view taken substantially on the line 3-3 of Fig. 1.

Fig. 3 represents a longitudinal sectional view taken substantially on line 4-4 of Fig. 1.

Fig. 4 represents a sectional view taken substantially on line 6-6 of Fig. 1.

Fig. represents a sectional view taken substantially on line 7-7 of Fig. 2.

Fig. 6 represents a fragmentary detailed sec- 30 tional View taken substantially on line 14-14 of Fig. 4.

Fig. '7 represents a perspective view of one of the bearing blocks, one of which is shown in section in Fig. 6.

Referring to the drawings wherein like numerals designate like parts, it can be seen that the machine includes a frame consisting of the side walls 5 6 and the bars 7 for connecting the same in spaced relation. At the lower portions 0 of these side walls 5 6, a bar s is connected at its ends to the said walls and this bar has secured thereto one or more casters 9, which are complementary to the Wheels 10 for supporting the machine.

At the top of the aforementioned frame is a super-frame 11 of rectangular shape, which has its ends projecting beyond the side walls 5 6. This superframe supports the side plates and 50 other plates defining an enlarged shell for accommodating the gears for the tank rollers and associated details.

A housing is provided for the machine which consists of the swingable front hood 12 and the 55 lid 13 which is supported upon the front wall 14 and side plates 15, as well as the back wall or plate 16.

As the side plate 15 must be spaced a substantial distance from the side walls 5 6, spacing members 17 are provided. These spacing mem- 30 bers are interposed between the side walls 5 and 6 and the corresponding side plate 15, and suitable means 18 at the end of the spacers serve to secure the spacers against displacement. In this manner, spaces are provided at the outside of the 65 walls 5 6 for accommodating various parts of the machine.

Between the walls 5-6 at the forward ends thereof is a platform 19 for supporting the electric motor 20. The motor 20 has a pinion 21 on 70 its armature shaft 22, which meshes with a gear 23 on the counter-shaft 24. The counter-shaft 24 carries a pinion 25 which meshes with the gear 26 on the shaft 27, which in turn carries a gear 28 meshing with the pinion 29. The shafts 22 75 and 27 extend through the wall 5 and are equipped with the beveled gears 30 and 31 respectively.

The beveled gear 30 meshes with a beveled gear 32 which is secured to the shaft 33 and this shaft 33 extends downwardly and carries a 8o beveled gear 34 at its lower end meshing with the beveled gear 35 on the shaft 36. 'I'his shaft 36 carries the gear 37 which meshes with the gear 38 on the rotary brush shaft 39, this shaft 39 carrying the brush 40 between the walls 56.

It might be observed in Fig. 4, that the ends of the shaft 39 extend through arcuate slots 41 in the side Walls 5-6 and are journaled through the outer ends of swingable members 42 fulcrumed as at 43 and each provided with an elon- 90 gated arm 44 of spring material, capable of being flexed to engage into any one of the notches 45 in the elongated plate 46, which is secured to the corresponding walls 5 and 6 at its outer end, and passing bolts 47 through slots 48 in the ends 95 of the plate 46 and equipped with bolts 47 with wing nuts 49.

Obviously, the notched'plates 46 can be adjusted longitudinally on the walls, besides permitting a wide arrangement of the brush 40 by engaging the lever 44 into the desired notches 45.

A conduit 50 extends into the machine through the rear wall 16 and is equipped at its outer end with a valve 51. The aforementioned beveled gear 31 meshes with a bevel gear 52 carried by 105 the lower end of the inclined shaft 53, which at its upper end is provided with the bevel gear 54 meshing with the bevel gear 55 on the lower wringer roll shaft 56.

Numerals 57-57 represents supports for the 110 shaft 56 as well as the upper wringer roll shaft 58 and a pair of U-shaped spring members 59 are employed for maintaining the shafts 56 and 58 urged toward each other.

One of these springs 59 is located at each end of the shaft and as is clearly shown in Fig. 2, the leg portions of the spring 59 are offset each as at 60, to provide a pocket for receiving the corresponding shafts. Numeral 61 represents a support for the springs and through the free end -of the upper leg portion of each spring 59 is threadedly disposed a screw 62 which has a winged head 63 at its upper end and a swivelled connection at its lower end denoted by numeral 54 with the lower leg portion of the spring 59.

Obviously, by rotating the screw 62 in the proper direction, the spring 59 will be contracted so as to eil'ect a tensional compression between the rolls 65 and 66 on the shafts 56 and 58 respectively. Obviously, the above affords a wringer for the wiping web 67.

As is clearly shown in Fig. 2, numeral 88 represents a dirty water tank which can have a suitable drain duct and within this, and its lower portion is mounted 'the roller 69. This roller has a hanger unit at each end thereof and each unit consists of a link bar pivotally connected at its upper end as at 71 to the upper portion of the tank 68 while its lower end is provided with an opening for receiving the corresponding end of the shaft 72 for the roller 69. This unit also includes a link bar 73 which has its lower end provided with an opening for receiving the corresponding end of the shaft 72, while its upper end has a longitudinally extending slot 74 for receiving a bolt 75, the latter being equipped with the wing nut 76.

Obviously by actuating the nut 76 the link 73 as well as the link 70 can be adiusted tovary the tension on the web 67. In other words, this is simply an idler roller for affording a take-up for the web.

At the' forward and rearward ends of the tank 68 at the upper port-ion thereof, are the rollers 77 and 78 respectively over which the web 67 is trained, the web 67 being also disposed between the aforementioned wringer rolls 65-66.

Adjacent the motor platform 19 is another roller 79 under vwhich the web 67 is trained while at the forward end of the frame and between the lower portions of the side walls 5 6 is rotatably supported the enlarged roll 80 over which the web 67 is trained. This web has the lower portion in the machine, and extends upwardly and over the pair of rollers 81-81, these rollers being located over the hood 82 which serves as a guard for the aforementioned brush 40.

To guide the web 67, suitable brace bars 7 (aforementioned) are provided with outstanding pins 83, each provided with a rotatable sleeve 84, and these sleeves can ride against the edge portion of the web 67 in the manner substantially shown in Fig. 5.

At the rear portion of the machine and between the lower portions of the side walls 5-6 is the roll 85 which is complementary to the roll 80 and under which the aforementioned web 67 is trained and extends from there upwardly over the aforementioned roll 78.

These rolls 80-85 are each provided with a shaft 86. which at its ends is disposed through openings 87 in the side walls 5-6, and are journailed through openings 88 in the bearing blocks 89. Each of these bearing blocks is provided with slotted ends 90 for receiving the edge portion of the corresponding wall 5 or'6 at the opening 87, and these blocks 89 are further provided with threaded openings 91 for receiving set screws 92 which can be urged inwardly to bite into the corresponding side wall 5 or 6 to maintain the bearing blocke 89 in position and against displacemen At this point, it will be observed, that the water conduit 15 extends inwardly of the machine adjacent the wall 6 and turns laterally to pass adjacent the brush 40 as in the manner shown clearly in Fig. 2. The extremity of the conduit 50 is shown disposed toward the brush 40 as at 93, and in this manner, water is supplied to the brush 40.

Numeral 94 represents a conduit extending upwardly from the motor 20 to a point at which 100 electrical connection can be conveniently made.

A rearwardly extending handle 95 is provided at the top of the machine and is braced by the bars 96. In the operation of the machine, the motor 20 is energized, which in turn drives the 105 shafts 33 and 53. These shafts in turn, operate the brush 40 and the wringer rolls 65 and 66. The operation of the wringer rolls feeds the web 67 and at the same time wrings the web of dirty water, collected while in its wiping operation at'110 the rolls 80 and 85.

Obviously, the guides shown in Fig. 5 will adequately guide the webs and prevent displacement and slack in the webs can be taken up by the roll 69 and its supporting units. 115

While the foregoing specification sets forth the invention in specific terms, it is to be understood that numerous changes in the shape, size and materials may be resorted to without departing from the spirit and scope oi the invention as claimed hereinafter.

Having thus described my invention, what I claim as new is:-

1. In a scrubbing machine of the character described comprising a mobile carriage, a scrubbing brush including a shaft, a pair of rockable supports for the ends of the shaft, each of said supports being provided with a spring arm, and a rack for each of the said arms, and against which the said arms can engage for adjustably supporting the shaft.

2. In a scrubbing machine of the character described comprising a mobile carriage, a scrubbing brush including a shaft, a pair of rockable supports for the ends of the shaft, each of said supports being provided with a spring arm, a rack for each of the said arms, and against which the said arms can engage for adjustably supporting the shaft, and an adjustableconnection between each of the racks and the said carriage.

NICHOLAS JANCHAN. 

